A client is seen in the primary care clinic reporting headaches. The client appears extremely distressed and insists that the client must have a brain tumor. Which mental health diagnosis is most probable for this client?

Hypochondriasis

Explanation:

Hypochondriasis also known as health anxiety that usually happens or occur in adulthood. It is a fear with the idea that a patient is thinking of having a serious medical condition but is not diagnosed. One symptoms of Hypochondriasis is having long term fear that a common symptoms will lead to a serious medical condition.